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Table 2 Microcirculatory variables

From: Comparison of an automatic analysis and a manual analysis of conjunctival microcirculation in a sheep model of haemorrhagic shock

Analysis method

Variable

Baseline (n = 10)

Shock (n = 10)

p value

Manual analysis

TVD [mm*mm−2]

17.8 ± 4.2

17.8 ± 3.8

0.993

PVD [mm*mm−2]

15.6 ± 4.6

11.5 ± 6.5

0.041§

PPV [%]

85.9 ± 11.8

62.7 ± 29.6

0.017§

Automatic analysis

TVD [mm*mm−2]

10.6 ± 1.4

11.0 ± 1.9

0.460

PVD [mm*mm−2]

10.2 ± 1.4

10.8 ± 1.9

0.330

PPV [%]

96.1 ± 6.

97.9 ± 3.7

0.372

  1. All values are presented as mean ± standard deviation
  2. TVD total vessel density, PVD perfused vessel density, PPV proportion of perfused vessels
  3. §Significant difference between baseline and shock